基于Log-Gabor滤波器的指纹图像分解重构增强技术分析

Analysis of fingerprint image decomposition and reconstruction enhancement techniquebased on Log-Gabor filter

文章对指纹图谱和指纹图像预处理的相关技术进行分析,介绍小波变换技术,对Gabor滤波器进行改善,通过傅里叶变换进行整合,构建Log-Gabor滤波器,研发出指纹图像分解重构增强技术,在此基础上介绍指纹细节特征提取技术,通过实验的方式分析Log-Gabor滤波器分解重构增强技术的应用效果。实验结果表明,这种预处理方法能够让指纹图像更加清晰,显示出更多的细节特征。

This paper analyzes the related technology of fingerprint and fingerprint image preprocessing,introduces wavelet transform technology,improves Gabor filter,integrates through Fourier transform,constructs Log-Gabor filter,develops fingerprint image decomposition reconstruction enhancement technology,based on this,introduces fingerprint detail feature extraction technology,through the experimental analysis of Log-Gabor filter decomposition reconstruction enhancement technology application effect.Experimental results show that this preprocessing method can make the fingerprint image more clear and show more details.